# 嵌套循环while嵌入while
i   =   1
while i <= 5:
    print("上班星期为：", i)
    i=i + 1
    t=9
    while t <= 17:
        print("时间段：", t,end=("   "))
        t   =   t + 1
    print()

#for嵌入for
for i   in  range(1,6):
    print("上班为周：",  i)
    for t   in range(9, 18):
        print("时间段为：    ",  t, end="    ")
    print()

#while九九乘法表
i   =   1
while   i   <   10:
    j   =   1
    while   j   <=  i:
        print("%d*%d=%d"%(j,i,j*i),end='    ')
        j+=1
    print(" ")
    i+=1

#